Adventure Awaits in Grace Cathedral! Join Father Timothy for an exclusive trek to the top of Grace Cathedral's majestic bell tower. Six fortunate adventurers (grades 4-8) will climb to heights few have seen, witnessing the 6-ton bourdon bell in action when it tolls at 4 pm, and discovering hidden Cathedral treasures along the way. Take in breathtaking views of San Francisco from Nob Hill, then celebrate the journey with fresh treats from neighborhood favorite, Bob's Donuts.